Thanks for the info Rolf.

I think there is room for improvement , what I tryed a while back was a one third height A frame support using the wider cat platform. A better rig might be a sailboard type sail that could be hung from the A connection and provide a wide range of full or flat shapes and rig heeling angles to help provide lift . I drew this concept out years ago but have never been able to develop the ideas .

A wing was put on an 18 sq some time ago {Wild Turkey} as you know -
http://www.catsailor.com/forums/showflat.php?Cat=0&Number=53650&an=0&page=78

I think the weight of the wing and its lesser upwind performance on an A class cat might render it uncompetative as the sailing techniques and rigs of A s are so developed nowdays.

Wings are potentially much faster downwind and can work at higher angles , Wild Turkey if set at too high an angle would just create so much power it dove or flipped , A class cats have less beam and very narrow low volume hulls , so there are the basic trade-offs .

Good to read your posts Rolf , I and many enjoy reading them . take care .